server.js

// server.js
const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const app = express();

app.use(express.static(__dirname+'/dist'));


// If an incoming request uses
// a protocol other than HTTPS,
// redirect that request to the
// same url but with HTTPS
const forceSSL = function() {
  return function(req, res, next) {
    if (req.headers['x-forwarded-proto'] !== 'https') {
      return res.redirect(
        ['https://', req.get('Host'), req.url].join('')
      );
    }
    next();
  }
};

// Instruct the app
// to use the forceSSL
// middleware
app.use(forceSSL());

// For all GET requests, send back index.html
// so that PathLocationStrategy can be used

app.get('/*', function(req, res) {
  res.sendFile(path.join(__dirname + '/dist/index.html'));
});


// Run the app by serving the static files
// in the dist directory
app.use(express.static(__dirname + '/dist'));
// Start the app by listening on the default
// Heroku port
app.listen(process.env.PORT || 4200, function() {
  console.log('Listening on port ' + this.address().port); //Listening on port 8888
});